如何从绑定到List 或匿名类型的绑定源获取正确的映射名称，以便在DataGridTableStyle上使用？

I'm trying to create a DataGridTableStyle object so that I can control the column widths of a DataGrid. I've created a BindingSource object bound to a List. Actually it's bound to an anonymous type list created though Linq in the following manner (variable names changed for clarity of what I'm doing):I'm trying to create a DataGridTableStyle objec